Hi, The book provides the main concept about how pbcgi60.exe works. pbcgi60.exe acts as a client of DPB. However, cgi program may be written in other language... If the cgi is written in other language, how does it using the DPB's object (for exp.: connection object) to connecto to server? and how does it using the DPB functions to create instance (for exp. : connection.createinstance)? if there is some source of pbcgixxx.exe written in C language?